With -vv, client shows a message when opening a daemon connection.

This parallels the recent addition of a log message for opening ssh
connections.

clientserver.c

@@ -80,6 +80,8 @@ int start_socket_client(char *host, char *path, int argc, char *argv[])
 	if (!user) user = getenv("LOGNAME");
 
 	if (verbose >= 2) {
+		rprintf(FINFO, "opening tcp connection to %s port %d\n",
+			host, rsync_port);
 	}
 	fd = open_socket_out_wrapped (host, rsync_port, bind_address,
 				      default_af_hint);